CN208364277U - The fuel tank cap of spirally inlet air mode - Google Patents
The fuel tank cap of spirally inlet air mode Download PDFInfo
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- CN208364277U CN208364277U CN201821103902.8U CN201821103902U CN208364277U CN 208364277 U CN208364277 U CN 208364277U CN 201821103902 U CN201821103902 U CN 201821103902U CN 208364277 U CN208364277 U CN 208364277U
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- fuel tank
- inner cover
- outer cover
- cap
- cover
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- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
This application discloses a kind of fuel tank cap of spirally inlet air mode, belong to miniature gasoline engine field, for small gasoline sump, it is installed in fuel tank body by outer cover of oil tank, the middle part of the outer cover of oil tank is the outer cover protrusion to extend internally, it is cased with fuel tank inner cover in the outside of outer cover protrusion, gasket is installed between fuel tank inner cover and fuel tank body upper surface；The outer cover protrusion is equipped with open slot, check valve is equipped in fuel tank inner cover, check valve is located at the lower section of outer cover protrusion；The contact position of the check valve and fuel tank inner cover is provided with inner cover through-hole, and big end cap is equipped with below the fuel tank inner cover, is equipped with anti-fall off chain in big end cap；It is covered in big end and is provided with big end cap through-hole, the inside of the big connection of end cap through-hole fuel tank body and fuel tank inner cover.In view of above-mentioned technical proposal, the application can be realized the screw channel air inlet cooperated between fuel tank cap and fuel tank, and venthole is not present in fuel tank cap, reduces the risk of fuel tank leakage, improves environment protecting.
Description
Technical field
The utility model belongs to miniature gasoline engine field, specifically, more particularly to a kind of for small gasoline sump
Spirally inlet air mode fuel tank cap.
Background technique
Currently, the fuel tank cap of miniature gasoline engine cover outside be provided with venthole, and by a check valve internally into
Gas.Be provided on outer cover of oil tank venthole have the shortcomings that it is as follows: 1, the venthole is chronically exposed in external environment, and is leaned on
It is bordering on internal check valve, dust in external environment etc. is easy to enter in internal check valve by venthole, influences list
Oil leak is caused to the air-tightness of valve.2, with the promotion of environmental protection consciousness, be provided in fuel tank cap venthole some areas by
To limitation, the popularization and sale of the type product are influenced.
Utility model content
The purpose of this utility model is to provide a kind of fuel tank cap of spirally inlet air mode, can be realized fuel tank cap and oil
Venthole is not present in fuel tank cap for the screw channel air inlet cooperated between case, reduces the risk of fuel tank leakage, improves environmental protection effect
Fruit.
In order to achieve the above objectives, the utility model is achieved through the following technical solutions:
The fuel tank cap of spirally inlet air mode described herein, is installed in fuel tank body by outer cover of oil tank, described
The middle part of outer cover of oil tank is the outer cover protrusion to extend internally, is cased with fuel tank inner cover, fuel tank inner cover in the outside of outer cover protrusion
Gasket is installed between fuel tank body upper surface；The outer cover protrusion is equipped with open slot, is equipped in fuel tank inner cover
Check valve, check valve are located at the lower section of outer cover protrusion；The contact position of the check valve and fuel tank inner cover is provided with inner cover through-hole,
Big end cap is installed below the fuel tank inner cover, anti-fall off chain is installed in big end cap；It is covered in big end and is provided with big end cap through-hole,
The inside of the big connection of end cap through-hole fuel tank body and fuel tank inner cover.
Further speaking, interior spiral shell is machined on the inner surface that outer cover of oil tank described in the utility model is connect with fuel tank body
Line is machined with external screw thread, the internal screw thread and external screw thread threaded connection on fuel tank body and there are the gaps for air circulation.
Further speaking, fuel tank inner cover described in the utility model is installed between fuel tank body and outer cover of oil tank, and oil
It is covered in case and is machined with inner cover upper process, inner cover upper process is mounted with outer cover central protrusion corresponding on outer cover protrusion.
Further speaking, gasket described in the utility model is between fuel tank inner cover and fuel tank body upper surface, and
It is articulated in fuel tank and is covered by the inner cover lower process covered in fuel tank.
Compared with prior art, the utility model has the beneficial effects that the application can be avoided check valve directly with the external world
Air contact, avoid invasion of the sand-dust impurity to check valve.Above structure again can play centainly extraneous sand-dust impurity
Filtration, guarantee the normal work of check valve.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the utility model induction pathway schematic diagram.
Fig. 3 is the utility model pressure release path schematic diagram.
In figure: 1, fuel tank body；2, outer cover of oil tank；3, outer cover protrusion；4, fuel tank body protrusion；5, gasket；6, fuel tank inner cover；
7, inner cover upper process；8, outer cover central protrusion；9, open slot；10, outer cover protrusion；11, inner cover lower process；12, check valve；
13, inner cover through-hole；14, big end cap through-hole；15, anti-fall off chain；16, big end cap.
Specific embodiment
Technical solution described herein is described further with reference to the accompanying drawings and embodiments.
As shown in Figure 1, this application claims be a kind of spirally inlet air mode fuel tank cap, which includes fuel tank
Outer cover 2 and fuel tank inner cover 6, wherein the outer cover of oil tank 2 is connect by internal helicitic texture with fuel tank body 1.It needs to illustrate
, there are gap, which constitutes outside air and inner air for threaded connection between outer cover of oil tank 2 and fuel tank body 1
Interchange channel.
Extending internally at the middle part of outer cover of oil tank 2 has outer cover protrusion 10, by prominent in the middle part of outer cover on outer cover protrusion 10
Rise 8 and inner cover upper process 7 be mounted with fuel tank inner cover 6, gasket 5 is installed between fuel tank inner cover 6 and the end face of fuel tank body 1, it is close
Packing 5 is mounted on the inner cover lower process 11 of fuel tank inner cover 6.
Check valve 12 is installed in the inside of fuel tank inner cover 6, in the bottom of check valve 12 and 6 junction of fuel tank inner cover is provided with
The gas entered from 6 bottom of fuel tank inner cover can be sent to the opening on outer cover protrusion 10 by lid through-hole 13, inner cover through-hole 13
At slot 9.
The bottom of the fuel tank inner cover 9 is equipped with big end cap 16, and big end cap through-hole 14, big end cap are provided on big end cap 16
Through-hole 14 is for being connected to 1 inside of fuel tank body and fuel tank inner cover 6.Above structure can be whole together with back-outing for outer cover of oil tank 2
Body takes out, and as outer cover of oil tank 2 is screwed or unscrewed together.
As shown in Fig. 2, playing sealing function by the port of gasket 5 and fuel tank body 1 after outer cover of oil tank 2 is tightened.Oil
It is provided with inner cover through-hole 13 on case inner cover 6, big end cap through-hole 14 is provided on big end cap 16, opening is provided on outer cover protrusion 10
Slot 9, the depth of the open slot 9 are higher than the height of 10 inward upper cover upper process 7 of outer cover protrusion.Above structure can be realized fuel tank body
Air inside 1 passes through the connection of check valve 12 and outside air.Specifically, in this application, extraneous air passes through oil
The gap that cabinet 1, outer cover of oil tank 2 are threadedly coupled enters in the bottom ventilation groove of outer cover of oil tank 2, and passes through outer cover of oil tank 2
Open slot 9 on the outer cover protrusion 10 of bottom enters in fuel tank inner cover 6.It is laggard that extraneous air 6 enters fuel tank inner cover 6
One step is entered in fuel tank body 1 by check valve 12, inner cover through-hole 13, big end cap through-hole 14.
As shown in figure 3, when operating condition is abnormal, if needed when the inside of fuel tank body 1 is because by high-temperature expansion timely
Pressure release.After the pressure in fuel tank body 1 is greater than the elastic force of the 5 side wing of check valve, the side wing of check valve 5 is opened gap, to let out
A part of gas out, the portion gas released enters the inside of outer cover of oil tank 2 by open slot 9, and continues into oil
The gap that case outer cover 2 is threadedly coupled with fuel tank body 1, and be drained into external environment.Insufficient pressure inside fuel tank body 1 is to push up
When the side wing of opening one-way valve 12, check valve 12 again serves to one-way sealing effect.The case where above-mentioned pressure release, is only applicable to extreme feelings
Risk under condition excludes.
In this application, the inlet channel is revised as passing through oil by original venthole of processing on outer cover of oil tank 2
Threaded connection gap between case outer cover 2 and fuel tank body 1, the open slot 9 on outer cover of oil tank 2, the inner cover processed on fuel tank inner cover 6
The structures such as through-hole 13, big end cap through-hole 14 can be avoided check valve 12 and directly contact with extraneous air, avoid sand-dust impurity pair
The invasion of check valve 12.Above structure can play certain filtration to extraneous sand-dust impurity again, guarantee check valve 12
Normal work.
Claims (4)
1. a kind of fuel tank cap of spirally inlet air mode is installed in fuel tank body (1) by outer cover of oil tank (2), it is characterised in that:
The middle part of the outer cover of oil tank (2) is the outer cover protrusion (10) to extend internally, is cased with oil in the outside of outer cover protrusion (10)
Case inner cover (6) is equipped with gasket (5) between fuel tank inner cover (6) and fuel tank body (1) upper surface；The outer cover protrusion (10)
It is equipped with open slot (9), is equipped with check valve (12) in fuel tank inner cover (6), check valve (12) is located at outer cover protrusion (10)
Lower section；The contact position of the check valve (12) and fuel tank inner cover (6) is provided with inner cover through-hole (13), the fuel tank inner cover (6)
Lower section be equipped with big end cap (16), anti-fall off chain (15) are installed in big end cap (16)；Big end cap is provided on big end cap (16)
Through-hole (14), the inside of big end cap through-hole (14) connection fuel tank body (1) and fuel tank inner cover (6).
2. the fuel tank cap of spirally inlet air mode according to claim 1, it is characterised in that: the outer cover of oil tank (2) and oil
Internal screw thread (3) are machined on the inner surface of cabinet (1) connection, external screw thread (4), the internal screw thread are machined on fuel tank body (1)
(3) and external screw thread (4) is threadedly coupled and there are the gaps for air circulation.
3. the fuel tank cap of spirally inlet air mode according to claim 2, it is characterised in that: fuel tank inner cover (6) installation
It is machined with inner cover upper process (7) between fuel tank body (1) and outer cover of oil tank (2), and on fuel tank inner cover (6), inner cover upper process (7)
It is mounted with outer cover central protrusion (8) corresponding on outer cover protrusion (10).
4. the fuel tank cap of spirally inlet air mode according to claim 3, it is characterised in that: the gasket (5) is located at oil
Between case inner cover (6) and fuel tank body (1) upper surface, and fuel tank is articulated in by the inner cover lower process (11) on fuel tank inner cover (6)
On inner cover (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821103902.8U CN208364277U (en) | 2018-07-12 | 2018-07-12 | The fuel tank cap of spirally inlet air mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821103902.8U CN208364277U (en) | 2018-07-12 | 2018-07-12 | The fuel tank cap of spirally inlet air mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208364277U true CN208364277U (en) | 2019-01-11 |
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ID=64925308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821103902.8U Active CN208364277U (en) | 2018-07-12 | 2018-07-12 | The fuel tank cap of spirally inlet air mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208364277U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116666054A (en) * | 2023-04-20 | 2023-08-29 | 广东南桂起重机械有限公司 | Transformer oil tank |
-
2018
- 2018-07-12 CN CN201821103902.8U patent/CN208364277U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116666054A (en) * | 2023-04-20 | 2023-08-29 | 广东南桂起重机械有限公司 | Transformer oil tank |
| CN116666054B (en) * | 2023-04-20 | 2023-11-17 | 广东南桂起重机械有限公司 | Transformer oil tank |
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